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Information Systems - Coursework Example

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The overall structure must be studies first which includes the symbols for the DFD. The source/ sink representing the external entity are depicted using a rectangle. The processes which carry out the tasks are represented with an oval shaped symbol with a shaded cap and…
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Information Systems
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Download file to see previous pages 3. Firstly the patient submits a request for X-ray application which is denoted by the data flow “Submits X-Ray request form” to the process “Make X-Ray appointment” and subsequently makes an appointment denoted by “Makes an appointment”.
The primary reasons for having an information system is to understand in detail the various cost drivers which make sure that a certain amount of money is drained in the process and an organization is benefited in the long run. For example, QuickShop Inc enveloped information system in the form of an ERP product which failed because of the lack of enough management belief in the system, lack of turnover ratio, not taking care of the system requirements and functions.
The information system processes are the ones which are mentioned in the SRS document which needs to be adhered by the software vendor. Often the customer is not clear or confused about the ideas and the requirements.
Total failure relates to either the concept has never been implemented or after implementation the system was abandoned. The concept building phase would have taken so much time that the very idea was quite complex at the end. The feasibility factors were studied in so detail that there was always some probability of not proceeding with the further implementation stages. The other case which was highlighted is that just after the system is implemented it was found to be not satisfying the business requirements or it did not envelope the business workflow and had to be abandoned so that the business does not suffer losses if it cannot make profit.
The partial failure of the system can be attributed for either the system does not fulfill the system requirements or there are significant undesirable outcomes. If a particular set of requirements are not fulfilled or if a department is not aligned in sharing information then it may result in failure of the system.
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